Implement handle



Jan. 21, 1936. MacPHERSON 2,028,291

IMPLEMENT HANDLE Filed Sept. 12, 1.935 /0 2 "T amen 712k 33 j 1? .4% 55/?7 5i Wasp/850 Patented Jan. 21, 1936 1 OFFICE IMPLEMENT HANDLE Albert Alfred MacPherson, Five Dock, near Sydney, New South Wales, Australia Application September 12, 1935, Serial No. 40,340 In Australia June 6, 1934 5 Claims.

This invention relates to implements of all kinds that are provide with handles to enable the implement to be wielded manually for working or recreation purposes. Instances of such implements are hammers, tennis rackets, golf clubs, cricket bats etc.

In such implements it is found that users require a certain balance of the implement that is to say the centre of gravity of the implement must be at a definite distance from the users hand for efiicient and untiring use.

New this invention has been devised to enable the centre of gravity of such implements to be adjusted as required. This desiderata being effected by providing an axial recess within the handle wherein a weight is housed having devices to adjust its position longitudinally of said recess and devices to retain said weight in any such adjusted position.

But in order that this invention may be read;- ily carried into practical effect it will now be described with reference to the drawing wherein Fig. 1 is a sectional elevation of one end of an implement handle. Fig. 2 is a section on line 22 in Fig. 1. Fig. 3 is a similar view to Fig. 1 showing a modified embodiment of the invention. Fig. 4 is a section on line 4 -4 in Fig. 3 and Fig. 5 is a similar view to Figs. 1 and 3 of a further embodiment of the invention.

Referring to Figs. 1 and 2 the handle 6 has axial recess 1 which is counterbored as shown at 8. Within the counterbore is a plug 9 providing end support for keys or runner guides l0 which are supported at their other ends in the bottom ll of the recess 1. A weight l2 has grooves l3 to engage the guides IE1 and said weight is medially screwed for a lead screw l4 having bearing in the plug 3 and a slotted head l5. A spring washer i6 is interposed between the plug 9 and the head 5 and the thrust of said washer is counteracted by an'annular abutment disc aflixed to the end of the handle by screws or the like (not shown).

In use the weight i2 is adjusted longitudinally by rotation of the screw I4 and is retained in such position by the thrust of the spring washer l6 preventing rotation of said screw M. Refer ring to Figs. 3 and 4 the handle l8 has recess l9, plug 20 and pad 23 of felt or the like and guides 2|. The weight 22 has grooves for the guides 2| and as well has end flanges 26 between which is retained a sleeve 25 of rubber or the like which resiliently grips the outer sides of the guides 2| and the weight 22. The weight 22 has one end countersunk and provided with screwed orifice 26 intended to receive the screwed end 21 of a thrust rod 28 which loosely fits orifice 29 in the plug 20.

In use the weight 22 is adjusted longitudinally by screwing the end 21 of the thrust rod 28 into orifice 26 and thrusting or pulling said rod 28 until the weight is in the desired position. The weight 22 is retained in position by the sleeve 25 gripping on the guides 2|.

Referring to Fig. 5 the handle 30 has recess 3| plug 32 and a pad 33. The weight 34 has end flanges 35 between which is retained a rubber or like sleeve 36 which neatly fits the recess 3|. In use the weight is moved as previously described in connection with Figs. 3 and 4 and is prevented from moving of its own accord by the neat fit of the sleeve 36 in the recess 3|.

It will be observed with respect to the Figs. 3 and 5 embodiments of the invention that they disclose different mechanical embodiments of the generic idea of employing a resilient friction member resiliently engaging means extending longitudinally of the handle to hold the weight in any position to which it may be forcibly adjusted along the bore, thereby permitting the use of an adjusting member which is normally disengaged from the weight and which is engaged therewith only when an adjustment is desired. In the Fig. 3 form of the invention the means extending longitudinally of the handle and engaged by the friction member are the rods 2|, while in the Fig. 5 form it is the wall of the bore 3|.

I claim:

1. An implement having a handle provided with a bore extending longitudinally thereof, a weight within said bore having means to be detachably engaged by a member for forcibly adjusting the same along the bore, a member of resilient friction material carried by the weight and held against longitudinal movement relative thereto, and means extending along the handle and resiliently and frictionally engaged by said member to hold the weight against accidental longitudinal movement along the bore from any position to which it may be forcibly adjusted by said adjusting member.

2. The combination as set forth in claim 1 in which the means extending longitudinally along the bore and frictionally engaged by the resilient member comprises a rod which extends through the weight and holds the weight against rotation.

3. The combination as set forth in claim 1 in which the means extending longitudinally along the bore and frictionally engaged by the resilient member comprises a rod extending through the weight and exposed at the side thereof, and in which the friction member is in the form of a sleeve embracing the Weight and oontractively engaging the rod.

4. An implement having a handle provided with a bore extending longitudinally thereof, a weight within said bore adjustable therealong and having means to be detachably engaged by a member for adjusting the weight along the bore, and a member of resilient friction material carried by the weight and held against longitudinal movement relativethereto and expansively engaging the wall of the bore to hold the weight against longitudinal movement along the bore from any position to which it may be adjusted by said adjusting member.

5. The combination as set forth in claim 4 in which the resilient friction member is in the form of a sleeve surrounding the weight.

7 ALBERT ALFRED MACPHERSON. 

